just have Jolla (2013) and Jolla (2015) devices. Ok for me.
I don't like the iPhone, but at least they keep their naming conventions very straight forward. iPhone (1) iPhone 3g iPhone 3gs iPhone 4 iPhone 4s etc. Hopefully Jolla keep it simple and just call the next Jolla, the Jolla 2. Some examples of awful naming conventions. The HTC One has to have the worst, these are all actually unique devices! HTC One V HTC One SV HTC One S HTC One X HTC One XL HTC One + HTC One HTC One X+ HTC One Mini HTC One Max HTC One (M) etc. No wonder HTC sales plummeted - no one had a clue what was the name of the phone they were supposed to be buying! Another naming convention that was awful was Symbian. Symbian^3/Anna/Belle Symbian^2[45] Symbian^1/Series 60 5th Edition Series 60 3rd Edition Ugh, how do you even pronounce a ^ character? Just keep OS names simple and use the standard major/minor version of numbers!